I concur!! Completely Halo based with modern day FPS mechanics added in to modernize it. Even the music is the same especially during boss battles. Enemies have same sounding voices during diolague. It's a great game to be sure and am enjoying it but is def HALO with a facelift. Weaponry even has similarities to them in name and appearance. Enemies have similarities in makeup. No complaint but people that say is not Halo is funny to me. You get your vehicle that's a cross between halo vehicle and speeder bikes from "Star Wars Return of the Jedi" they've stuck with what they've known and what made their kingdom. Just wish they could've had some more originality. I was playing with friend who kept calling all the enemies by their Halo counterpart names which cracked me up.